Hello everyone. I am having a problem with my apply process. I have 2 databases (10.2.0.4) which are both capturing changes, and propagating to one another. My problem is, one of the databases is not applying the changes that have propagated from the other. The changes are just sitting in the apply queue. If I go to the alert log, I see this error:

What is the blocking user doing. Possible a select for update?Have you setup a heart beat table? Are updates to the table being applied to the destination?If the heart beat table is being updated then the apply process is applying.